Williamstown September Weather Averages New Jersey, United States of America

September Weather Averages for Williamstown

High Temp	25°C	78°F
Low Temp	17°C	63°F
Avg Temp	21°C	70°F
Sunshine Hours	206 hours
Rainfall	113.62 mm	4.47 In
Rain days	7 days
Pressure	1017 mb	31 In

Williamstown September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	25°C / 77°F	17°C / 62°F	21°C / 69°F	240 hours	179.08 mm / 7.05 In	7 days	1018 mb / 31 In
2009	23°C / 73°F	16°C / 60°F	19°C / 66°F	193 hours	137.50 mm / 5.41 In	5 days	1018 mb / 31 In
2010	26°C / 79°F	17°C / 63°F	21°C / 70°F	262 hours	127.03 mm / 5.00 In	6 days	1014 mb / 30 In
2011	24°C / 76°F	17°C / 63°F	21°C / 69°F	160 hours	152.37 mm / 6.00 In	13 days	1016 mb / 30 In
2012	24°C / 76°F	16°C / 61°F	20°C / 68°F	248 hours	116.00 mm / 4.57 In	6 days	1016 mb / 30 In
2013	24°C / 75°F	14°C / 58°F	19°C / 66°F	306 hours	47.87 mm / 1.88 In	3 days	1016 mb / 30 In
2014	25°C / 76°F	16°C / 60°F	20°C / 68°F	210 hours	58.07 mm / 2.29 In	6 days	1018 mb / 31 In
2015	27°C / 80°F	18°C / 64°F	22°C / 71°F	168 hours	73.50 mm / 2.89 In	7 days	1018 mb / 31 In
2016	27°C / 80°F	18°C / 64°F	22°C / 71°F	222 hours	130.60 mm / 5.14 In	6 days	1018 mb / 31 In
2017	26°C / 79°F	18°C / 65°F	22°C / 71°F	214 hours	36.48 mm / 1.44 In	5 days	1017 mb / 30 In
2018	26°C / 79°F	20°C / 68°F	23°C / 73°F	117 hours	218.27 mm / 8.59 In	17 days	1021 mb / 31 In
2019	27°C / 80°F	18°C / 65°F	22°C / 72°F	257 hours	39.96 mm / 1.57 In	4 days	1019 mb / 31 In
2020	25°C / 77°F	18°C / 64°F	21°C / 70°F	188 hours	136.39 mm / 5.37 In	6 days	1019 mb / 31 In
2021	26°C / 79°F	17°C / 63°F	21°C / 70°F	211 hours	105.65 mm / 4.16 In	7 days	1016 mb / 30 In
2022	26°C / 79°F	16°C / 61°F	21°C / 69°F	218 hours	100.60 mm / 3.96 In	4 days	1017 mb / 31 In
2023	26°C / 79°F	17°C / 62°F	21°C / 70°F	188 hours	235.01 mm / 9.25 In	6 days	1017 mb / 31 In
2024	24°C / 76°F	17°C / 63°F	20°C / 69°F	137 hours	102.54 mm / 4.04 In	3 days	1019 mb / 31 In

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